Evaluation of patency using photo-plethysmography on endoscope images
AssigneeKoninklijke Philips N.V.
InventorsHaytham Elhawary, Aleksandra Popovic, Willem Verkruijsse
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Abstract
A system for evaluating patency includes a light sensor (128) positionable relative to a blood vessel to receive light from the blood vessel and convert the light into an image signal. A photo-plethysmography (PPG) interpretation module (115) is configured to receive the image signal and output pixel values in an image representing PPG information. An image generation module (148) is coupled to the PPG interpretation module to receive the pixel values and generate a PPG map to be output to a display for analysis.
Claims15
A system for evaluating patency, comprising:
- a light source configured to generate light for illuminating a blood vessel;
- a light sensor positioned on an endoscope and positionable relative to the blood vessel, the light sensor being configured to receive light from the blood vessel responsive to the generated light and convert the light into an image signal;
- a photo-plethysmography (PPG) interpretation module configured to receive the image signal and output pixel values in an image representing PPG information;
- and
- an image generation module coupled to the PPG interpretation module and configured to receive the pixel values and generate a PPG map to be output to a display for analysis.
A method for evaluating patency, comprising:
- positioning a light sensor relative to a blood vessel using an endoscope to receive light from the blood vessel illuminated by a radiation source;
- converting the light received from the blood vessel into an image signal;
- interpreting the image signal to determine a photo-plethysmography (PPG) signal and outputting pixel values in an image representing PPG information;
- generating a PPG map to be output to a display for analysis from the pixel values;
- and
- analyzing at least one PPG map to determine patency of the blood vessel.
Dependencies are inferred from the claim text.